Pulley-block.



No- 845,041. PATENTED FEB. l9, 1907.

A. OPSAL. PULLEY BLOCK.

APPLICATION FILED JAN. 2, 1906.

Q7 {J a I UNITED srA ns PULLE,Y

- Specification of Letters Patent.

ANDREW OPSAL, OF PORTLAND, onneon.)

BLOCK.

Patented Feb. 19,1907.

Application filed J u y Serial No. 294.232.

at all it may concern.- 4 4 Be it known that 1, ANDREW OPSAL, a cit1 "zen ofthe Uilited States, and a resident of i the city'ofPortland, in the county ofMultnomah and State of Oregon, have invented a l new and. useful Improvement in Pulley- Blocks, of which the following is a specification, reference being had to the accompanying drawings as constituting a part thereof.

This invention has for its object to provide means by which lubricant may be efficiently shown inFig. 3, said endsj? ofithe axle 5 may be threaded and the eyes of the caps 9 made with corresponding threads. The lastdescribcd construction of course makes a more efi'ectual barrier to grit. The extremities 5 of the axle 5 are threaded in either construction, and nuts 12 14f-are secured thereon to hold the parts in place.

To facilitate the insertion'and removal. of the cable,'the side 1 of the shell isrnadewith perforated knuckles 15, in which is hinged. a

, retained in the j ournal-bearings of the sheave, cross-head 16 by a hinge-pin 17. The cross andg-incidentally to obtain the features and, I5

- vertical section taken longitudinally through plained below.-

encompassed .by'the peripheral sliggification, including no to the bearing sur aces to to. protect the bearings against grit and dirt,

improvements described inthe body ofthe durability and cheapof construction. The arrangement and operation of my pull'ey blockis illustrated in the drawings, in

Figure 1 is a central transverse section of thebody of the pulley. Fig. 2 is a central the sheave, showing the rear side of the shell. Fig. 3 is a partial vertical section of a modification, and Fig. 4 is a partial plan section showing details of construction fully ex- The 'numerals designate the parts referred t0. v i I,

The shell consists of two-parts .or sides 1 2, respectively, made with protruding wall portions 3 3, providing roomfo gin'terior annn-' lar chambers 4, and said protruding wall portions being .aperturcd to receive the ends of the axle or pin 5. The sheave6 is made with a bearing-eye of sufficient diameter to accon mbdate a bushing or sleeve 7, placed on. the as e}. The inner annular face of such bushing is provided with an endless series of cavities or flutes 7, in which to fill lubricant. The axle 5 is made with reduced ends .5, 8, abutting against the leaving shoulders ca s9-10. I

V avoid straight assages from the exterior prevent grit getting between the latter. he sides of the sheavefi to this end are made with bosses 13, flangesll of said caps 9 10, set iii-the chambers 4 of the sides of the shell. ;.'The' sides of the sheave are furthermore made with annular. grooves, into which extend said peripheral flanges of the'caps' 9 10 Thwa l-caps 9 10 may be loosely placed-onthejenda of; the thicker or a flat spring 23 maybe provided, such spring perforated lug 22 on the side 2 of the shell, and to hold the link-.21 in place being aflixed to the side 2 by a screw 25, and

he free end thereof extending into'a cavity 4 therefor made in the lug 22 (see Fig. 4) and bearing against the lower fiat surface 21 of the link. The rear side 1 of the shell. is provided with integral lugs 26 27, arranged as shown in top of the sheave, so as to prevent the cable running on the-latter from fouling with the throat of the pulley.- I claim 1. In a pulley-block, the combination of a shell the interior faces of the sides ofwhich are provided with chambers 4, a pin or axle havin' reduced ends journaled in saids'id'es, a bus ing mounted on said pin, a sheave, mounted onsaid'bushing, m do with interior annular grooves concentric ith its eye, and caps mounted on the pin' in said chambers 4 of the sides of the shell rind having peripheral flanges extending into the grooves in the side faces of the sheave.

"2. Ina pulley-block, the combination of a shell the interior. faces of the sidesof which are provided with chambers 4, a pin or axle having reduced ends; a bushing'mounted on the pin and made with an' endless series of cavities 7' for holding lubricant in the eye thereof, a sheave mounted on, said bushing, made with interior annular grooves concentric with its eye, and caps mounted on the pin, in said chambers 4' of the sides of the shell and having peripheral flanges extending into the grooves in the side faces of the sheave. I

. 3. In a pulley-block, the combination of a Fig. 2 and extending across the 1 r ghiall thdifltel'ibf feces of the sides of'which are provided with chambers 4, 3 J 'Pi 1 1-01 axle airbus with i tl l ri .g -Q WS. i-encomp mgseid bosses,v and v b I hivingredilced ends journaledin'seid sides,

-moun ted o'n said pin; it sheave; mquntedwn said bushing, made-With bosses .capsmeuh tedpn-the in, "ides-19f the-sell gesfextending into pf-thesheave. -;eombinetionefe eighs tmt r eeface 1 the side =0f which qm providedwithfche, hers .4, a pin 6i" axle he reduced ends jeu e-le'din eeidflsides', a

' s ee e nt 10 aid. p a Jeh hunted cngseiiiiblishing; made with-interior filer?gtieevesjce icentric' with its eye. and 1 A untedi'oh-thepinfi said chambers 4 5 es'ff'theshell-end having peripheral nges fxtendinginte the grooves in the side sh thesheanfe; .thgiye's'o f the caps-end- '11Dg,mOl1I1 endless series of cavities 7 for holding lubricant theeye thereof, a sheave m0 nted on eeid'bushing and made With exterior annular grooves concentric with its eye, and capsm'eunted' on the pin in said chambers 4 of thQSidGS of the shell and having peripheral flanges extending into said grooves of the side feces'of the sheey'e; theeyes' of the caps and the beeringsu ljfaiees therefor on the periphery of the phi-being made with threads-.-

viitx esses z-i Th5. GE1'sILER,--

Await A. TUENER.

the bearing surfaces therefor on the peripheryof the pin'being made with threads.

A pulley-block comprising eshell the interior faces of the sides of which are provided with chambers 4, e p'iiior axle having =1; it ={ideffitces encompassing" the eye end-2' reduced ends jeurnaled in said sides, a bushted on said pin and made with'an ANDREW 1 51" 

